CAT811LTBI-T3

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	4.63V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-253-4, TO-253AA
Supplier Device Package:	SOT-143
Base Part Number:	CAT811

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PMIC - Supervisors

The CAT811LTBI-T3 is a good example of a PMIC-Supervisor. It provides a series of comprehensive protection functions that help optimize system performance and extend the life of the product. In this article, we will look at the application field and working principle of the CAT811LTBI-T3. 1. Application FieldThe CAT811LTBI-T3 is mainly used in a variety of embedded systems. With its battery-backed components, the CAT811LTBI-T3 can provide system standby functions in power-critical applications. It also supports multiple modes of operation, allowing customers to adjust or tune the product\'s parameters according to their needs.The CAT811LTBI-T3 can also provide a variety of power management functions. This includes monitoring the system power supply, providing a low battery indicator and providing transient protection to protect the system from voltage disturbances such as brownouts or spikes. Additionally, the CAT811LTBI-T3 also provides a watchdog timer, which can be used to reset the system if the system hangs or becomes stuck in a loop. 2. Working PrincipleThe CAT811LTBI-T3 is a voltage supervisor that is always on, even when the main power supply is off. It monitors the system voltage level every millisecond and it can send an active-low reset signal if the voltage falls below the threshold voltage.In normal operation, the CAT811LTBI-T3 is constantly monitoring the supply voltage. If the voltage drops below the predetermined threshold, the CAT811LTBI-T3 will immediately send an active-low reset signal. This will cause the system to reset and recover from any unexpected situation. The CAT811LTBI-T3 also supports several operational modes. The customer can choose the operating mode that is most appropriate for their application. For example, the customer can choose to have the CAT811LTBI-T3 monitor the supply voltage every second, or they can choose to have the CAT811LTBI-T3 detect a supply voltage drop within a millisecond. Furthermore, the CAT811LTBI-T3 also supports a low battery indicator. In this mode, the CAT811LTBI-T3 will wait until the supply voltage reaches a predefined low battery level before sending a low battery alert. The CAT811LTBI-T3 also offers transient protection. Transient protection prevents the circuit from damage due to voltage transients caused by spikes and brownouts. In case of a transient, the CAT811LTBI-T3 will automatically switch off the power supply to protect the system from potential damage. The CAT811LTBI-T3 also supports a watchdog timer. This is used to reset the system if the system hangs or becomes stuck in a loop. The customer can choose to either have the watchdog timer reset the system after a predefined time period or when a predefined number of events occur.In conclusion, the CAT811LTBI-T3 is a great PMIC-Supervisor. It provides a variety of power management and protection functions that help optimize system performance and extend the life of the product. By understanding the application field and working principle of the CAT811LTBI-T3, customers can design and develop reliable embedded systems that can withstand a variety of environmental conditions.

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